Damari inflates a spherical balloon to twice its original radius. explain to damari why the surface area is 4 tims as big when the radius is doubled.

The easiest way is to show him the formula for the area of a sphere:

Area = 4 π (radius)²

That's a good thing to discuss, because it's a good thing to remember,
and discussing it will help him remember it.

The important part to look at is the part where it says " (radius)² " .
That tells you that if you multiply the radius by (Anything), then
the area is multiplied by (Anything)² .

Since he multiplied the radius by 2, the area was multiplied by (2)² = 4 .

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,

Yes the slope to this is -5